From 1997 to 2006, with the implementation of the pasture fence project and construction of shelter forest, the grassland ecology resumed and improved low grass was instead by high grass in most area.

• 1997-2006年，草地实行围栏工程并建设人工防护林，草地生态恢复，大部分低草转化为高草，低草处于最大的“落势”，高草处于最大的“涨势”。